( -3a ) •a +(-4a) •a -(5a ) .( -3a ) ·a +(-4a) ·a -(5a ) .
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 12:04:51
![( -3a ) •a +(-4a) •a -(5a ) .( -3a ) ·a +(-4a) ·a -(5a ) .](/uploads/image/z/11553394-58-4.jpg?t=%EF%BC%88+-3a+%EF%BC%89+%26%238226%3Ba+%2B%EF%BC%88-4a%EF%BC%89+%26%238226%3Ba+-%EF%BC%885a+%EF%BC%89+.%EF%BC%88+-3a+%EF%BC%89+%C2%B7a+%2B%EF%BC%88-4a%EF%BC%89+%C2%B7a+-%EF%BC%885a+%EF%BC%89+.)
( -3a ) •a +(-4a) •a -(5a ) .( -3a ) ·a +(-4a) ·a -(5a ) .
( -3a ) •a +(-4a) •a -(5a ) .
( -3a ) ·a +(-4a) ·a -(5a ) .
( -3a ) •a +(-4a) •a -(5a ) .( -3a ) ·a +(-4a) ·a -(5a ) .
-7a方-5a (平方不会打)